The five discs were, as is seasonal Sufjan tradition, given out to family and friends between 2006 and 2010, and they added up: eventually totaling 58 collected tracks. Members of The National, Arcade Fire, and Danielson Famile helped out, and, if you want a first taste, the 12-and-a-half-minute, The Age of Adzy psychedelic freakout "Christmas Unicorn" —which spontaneously breaks out into a Joy Divison singalong— is available for free download.
The album will be issued in both CD and LP box-sets, and involve all manner of added paraphernalia (stickers, temporary tattoos, paper ornaments, posters, songbook) in either format. Pre-orders can be made via Sufjan's website. Merry Christmas, kids.